What is the best method to overcome the effects of shadowing when attempting to place an INMARSAT-B call?

Correct Answer: Option D — A small course change should work.

Physical obstructions such as masts, funnels, or superstructures create shadow sectors that block the line-of-sight path between the ship antenna and the geostationary satellite. Altering the vessel's heading slightly clears the blockage and restores the communication link.